From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/dep-graph/dep-graph-trait-impl.rs | 61 +++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/test/ui/dep-graph/dep-graph-trait-impl.rs

(limited to 'src/test/ui/dep-graph/dep-graph-trait-impl.rs')

diff --git a/src/test/ui/dep-graph/dep-graph-trait-impl.rs b/src/test/ui/dep-graph/dep-graph-trait-impl.rs
new file mode 100644
index 000000000..19002965b
--- /dev/null
+++ b/src/test/ui/dep-graph/dep-graph-trait-impl.rs
@@ -0,0 +1,61 @@
+// Test that when a trait impl changes, fns whose body uses that trait
+// must also be recompiled.
+
+// incremental
+// compile-flags: -Z query-dep-graph
+
+#![feature(rustc_attrs)]
+#![allow(warnings)]
+
+fn main() { }
+
+pub trait Foo: Sized {
+    fn method(self) { }
+}
+
+mod x {
+    use Foo;
+
+    #[rustc_if_this_changed]
+    impl Foo for char { }
+
+    impl Foo for u32 { }
+}
+
+mod y {
+    use Foo;
+
+    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
+    pub fn with_char() {
+        char::method('a');
+    }
+
+    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
+    pub fn take_foo_with_char() {
+        take_foo::<char>('a');
+    }
+
+    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
+    pub fn with_u32() {
+        u32::method(22);
+    }
+
+    #[rustc_then_this_would_need(typeck)] //~ ERROR OK
+    pub fn take_foo_with_u32() {
+        take_foo::<u32>(22);
+    }
+
+    pub fn take_foo<T:Foo>(t: T) { }
+}
+
+mod z {
+    use y;
+
+    // These are expected to yield errors, because changes to `x`
+    // affect the BODY of `y`, but not its signature.
+    #[rustc_then_this_would_need(typeck)] //~ ERROR no path
+    pub fn z() {
+        y::with_char();
+        y::with_u32();
+    }
+}
-- 
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